Installation, Voltage sensing, Caution – Lincoln Electric POWER WAVE SVM173-A User Manual
Page 14
VOLTAGE SENSING
The best arc performance occurs when the Power
Wave has accurate data about the arc conditions.
Depending upon the process, inductance within the
electrode and work lead cables can influence the volt-
age apparent at the terminals of the welder. Voltage
sense leads improve the accuracy of the arc conditions
and can have a dramatic effect on performance.
If the voltage sensing is enabled but the sense leads
are missing or improperly connected, extremely high
welding outputs may occur.
Do not tightly bundle the work sense lead to the work
lead.
The sense leads connect to the Power Wave at the
four-pin connector located underneath the output ter-
minal cover. Lead 67 senses electrode voltage. Lead
21 senses work voltage.
Enable the voltage sense leads as follows:
TABLE A.2
Process
Electrode Voltage
Work Voltage
Sensing 67 lead *
Sensing 21 lead
GMAW
67 lead required
21 lead optional
GMAW-P
67 lead required
21 lead optional
FCAW
67 lead required
21 lead optional
STT
67 lead required
21 lead required
GTAW
Voltage sense at
Voltage sense at
terminals
terminals
SAW
67 lead required
21 lead optional
* The electrode voltage 67 sense lead is integral to the con-
trol cable to the wire feeder.
A-8
A-8
INSTALLATION
POWER WAVE 455M/MSTT
POWER
WA
VE 455/R
I ON
O OFF
POWER
WA
VE 455/R
FIGURE A.3 – DIP SWITCH LOCATION
CAUTION
REMOVE
FRONT
COVER
WIRE FEED
HEAD BOARD
ON RIGHT
CONTROL
BOARD
ON LEFT